Cited by 3,216Lower Extremity Biomechanics and PathologiesGait Recognition and AnalysisBalance, Gait, and Falls Prevention

Measurement of lower extremity kinematics during level walking

Open access
Kadaba, M. P., Ramakrishnan, H. K., Wootten, M. E.·1990·Journal of Orthopaedic Research

Abstract

A simple external marker system and algorithms for computing lower extremity joint angle motion during level walking were developed and implemented on a computer‐aided video motion analysis system (VICON). The concept of embedded axes and Euler rotation angles was used to define the three‐dimensional joint angle motion based on a set of body surface markers. Gait analysis was peformed on 40 normal young adults three times on three different test days at least 1 Week apart using the marker system. Angular motion of the hip, knee, and ankle joints and of the pelvis were obtained throughout a gait cycle utilizing the three‐dimensional trajectories of markers. The effect of uncertainties in defining the embedded axis on joint angles was demonstrated using sensitivity analysis. The errors in the estimation of joint angle motion were quantified with respect to the degree of error in the construction of embedded axes. The limitations of the model and the marker system in evaluating pathologic gait are discussed. The relatively small number of body surface markers used in the system render it easy to implement for use in routine clinical gait evaluations. Additionally, data presented in this paper should be a useful reference for describing and comparing pathologic gait patterns.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/jor.1100080310

Cites

25 of 25 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Sixteen reflective markers were attached according to the Plug-in-Gait Marker Placement.

    “Sixteen reflective markers were attached on the lower limb of the subject according to the Plug-in-Gait Marker Placement 20 .”

    From Motion Analysis of Normal Patellar Tendon Reflex (2013) · cites this paper as [20]

    The MARKER SYSTEM AND EMBEDDED AXES section describes markers placed on the pelvis and lower limb, including thigh- and shank-wand markers. It does not identify the placement as Plug-in-Gait or specify sixteen markers, so those parts of the cited claim are unsupported. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. [2]2. Antonsson EK: A three dimensional kinematic acquisition and intersegment dynamic analysis system for human mo- tion. Ph.D. Thesis, Department of Mechanical Engineering, MIT, 1982
  2. [9]9. Hurwitz DE: A quantitative evaluation of a computerized motion analysis system. M.S. Thesis, Rensselaer Polytech- nic Institute, 1987
  3. [25]25. Wootten ME, Kadaba MP, Ramakrishnan HK, Gorton G, Cochran GVB: Assessment of repeatability of kinematic and kinetic parameters in normal subjects. Transactions of the 33rd Annual Meeting of ORS, 1987, p. 503

Cited by

Sorted by citations

Authors
Kadaba, M. P., Ramakrishnan, H. K., & Wootten, M. E.
Affiliations
Helen Hayes Hospital (US)
Corresponding author
Kadaba, M. P.
Venue
Journal of Orthopaedic Research
Publisher
Wiley
Published
1990-05
Volume
8
Issue
3
Pages
383-392
ISSN
  • 0736-0266 (ISSN-L)
  • 1554-527X
OpenAlex
W1976953979
Cited by
3,216
References
25
Citations by year
2026: 96 · 2025: 112 · 2024: 117 · 2023: 128 · 2022: 130 · 2021: 156 · 2020: 144 · 2019: 139 · 2018: 163 · 2017: 166 · 2016: 161 · 2015: 170 · 2014: 191 · 2013: 159 · 2012: 140
FWCI
5.17
Type
journal article
Language
en
Open access
Locations
  • Journal of Orthopaedic Research® (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Orthopaedic Research Society
  • National Institutes of Health (1r01am034886-01)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Lower Extremity Biomechanics and Pathologies
  • Physical Sciences › Engineering › Biomedical Engineering › Gait Recognition and Analysis
  • Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Balance, Gait, and Falls Prevention
Keywords
lower limb kinematics, level walking, gait analysis, hip joint, knee joint, ankle joint, pelvic movement
MeSH terms
Adolescent, Adult, Algorithms, Biomechanical Phenomena, Female, Gait, Humans, Image Processing, Computer-Assisted, Leg, Male

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review